I know a few anime forums.
Here is one of the best ones:
http://www.silverwynd.org/discus/index.html
Well at least I think it's the best.
If thats not good enough there might be a link to a better one on the IRC/Chat/WebBoards section of the anime web turnpike, which is
www.anipike.com
I hope I was of some help to you alex